This element defines a file as an ASX file. The first four characters of an ASX file must be <ASX. Other elements defined within the scope of the ASX element, such as TITLE and AUTHOR, are associated with the show information displayed by the WMP control.
For the WMP control, the ASX version number is 3.0. Acceptable values for the VERSION attribute include both 3.0 and 3 (with or without the decimal point).